Sash-lock.



. .To al?, whom it may concern.L

, UNITED. sTArEs PATENT i oEEroE. Y

, CHARLES s. WRAY, vOE HIGHLAND MILLS, NEW Yoan.

sAsH-Look.

' Naseem?.

Specification of lLetters Patent.

Patented Qca. 23,1906.

replication ned Merch 15. ienaserai No. 306,136,

Be it known thatl, CHARLES S. WEAY, a citizen of the United States, and a resident of Highland Mills, in the county o -Orange and State of New York, have invented a new and Improved Sash-Lock, ofwhich the following is a ull, clear, and exact description.`

This invention relates to sashelo'cks such as are used on sliding sashes for locking the same to the window-easement.'

The object of the' lnvention 1s to produce a sash-lock of simple construction which lwill not become ineiiicient from wear under constant use. l, v

The invention consists in the construction and Combination of parts tobe more fully described hereinafter and particularly set forth l in the claims.

' Reference is to ing drawings, forming' a part of-this specification,'in wh1ch similarcharacters of reference indicate corresponding parts in all the figures.l

Figure 1 is 'an elevation showing a portion of a window-easement and the corner of a sash, the sash-'lock being represented in cross-A section, together with a portion of the windoweasement. Fig. 2 is a vertical section taken on the line 2 2 of Fig.. 1. Fig. 3 isan elevation showingthe outer side'of the lock and adjacent portions of the sash and easement. 4 -is a view somewhat similar to Fig. 1, but

' showing a modiiied construction of the lock;

vand Fig, 5 is a perspective showing a thimble i or kee er whichis adapted to be set into the 35.

faceo the easement. l

Referring more particularly to the parts, 14

' :represents the easement in which thesash 2 is .adapted to slide vertically in the usual manner. At a suitable point on the sash 2 the case 3 of the lock is attached by means of screws 4. This case 3 has therectangular form shown, and the wall 5 thereof, which is disposed. near the faeeofthe easement 1, is

provided with an openin 6, within which there is mounted' a slidab e .bolt 7. To'the inner extremity-of this bolt 7, which projects intothc interiorlof thecase 3, a link 8 is pivotallyattached, and this link attaches at other extremity to a link 9, which link 9 is attaehedyby means of a pivot-screw 10, to the sideof the case 3, as indicated. The said l' pivot-screw 1'0 is snbstantiall in alinernent with the longitudinal axis of t e bolt 7. Just beneath the point of'connection of the links 8 and 9 thefbottorn wall of the case 3 is 'pro.'

be had to the accompany-- Fig. i

- opened or shut.

videdwith va slightly-raised projection or boss 11, and against this boss the. links nor-`r mally rest, as shown in 1. The link '9 is preferably provided on its upper edge with a pin 12, which projects upwardly and serves as a reta'inerfor a helical spring 13 of arcuate forni, the upper extremity of whichspring is heldin position by means of a downwardly.-

projecting pin 14, which ismounted in the -upper corner of the case 3, above'the pivot-screw,

, 1 0, as shown. The links and 9 are connectedl by a pin 15, which projects 'outwardlyfrorn the case 3 through a curved slot 16, as indicated in Fig. 3, the said pin being provided with a curved thumb-piece 17. On the outer face of the case, as shown in Fig. 3, preferably at the upper edge and at the extremity remotey from the bolt,.an outwardly-'projecting ear"v y I 18 is formed, which constitutes a rest for the nger when the thumb is being a plied o the thunib-piece or wingv 17, as wil be lreadily understood. With this constructionitshould .l

be readily understood that -by forcing the thumb-piece 17 upwardly the links 8 and 9.

ma be made 'to assume the. position in which theyA are shown in dotted lines int-'.Fig.. 1, this" operation being accompanied fby a withdrawal of the bolt 7 into `the interior of" the case. f

At suitable points in the easement l I provideA recesses such as the recess 19,(shownl in I Fig. 1,) in which a keeper or thirnble 2O is` held,'as.` shown. The Jforni of this keeper is very clearly shown in Fig. 5. It consists of a..

cup-shapedbody21, having a vcountersunk opening 22 formed inthe bottom thereof to. receive a fastening-screw 23, the-outer edge. of the said body being provided with alaterally-projecting flange 24, which is countersunk in the outer face of the easement, as shown. The bolt 7'is adapted to engage the keeper, as indicated in Fig. 1, at which time the window is evidently locked against being Anticipating that in some instances= the sash-lock will be applied where clearance connected by a pin or screw 29 and at their joint being'norm'ally held against a boss 30,

roo

Rei'erl IIO similar tothe boss 11, against which the links are normally pressed by a helical spring 31 of the form shown, the upper extremity of said spring being held in position by a pin 32, which projects down from the upper wall ofthe case, as indicated. The link 28 beyond its pivot-point 33 projects so as to form a -toe 34, and this toe is adapted to be engaged by a catch 35, formed at the extremity of the iinger-lever 36, said inger-lever being pivoted at 37 and projecting through an opening 38 in the rear wall oi the case. Evidently by pressing upwardly on the ringer-lever 36 the catch 35 will be depressed so as to raise the joint connection between the links 27 and 28, withdrawing the bolt 26, as will be readily understood. In order to facilitate the upward movement of the lever 36, the case.25 is provided near its upper edge with a laterally-projecting finger-piece 39. The connection between thelinks constitutes a togglejoint..

Attention is ,called to the `fact that when the joint connection between the links in both forms of the lock is in engagement with the wall of the case, as described, the pivotal connection between the links is below the center line connecting the bolt 7 with the pivot connection of the remote link-that is, the links are in an unalined relation to each other. Frein this arrangement any force operating directly upon the bolt to torce the same'inwardly would be resisted by the case; and, furthermore, whatever be the wear upon the bolt it will always maintain substantially the position in which it is held when the case is iirst applied to the sash.

Especial attention is called to the keeper 20 and particularly to the fact that this keeper may be applied readily, by means of a single screw, in the manner described. The opening in the cup 21 is suciently large .to enable the screw-driver to be applied readily, and any force which tended to'rotate the keeper could not displace it. In other words, the keeper has an axis of symmetry which is also the axis of the bolt.

Special attention is called to the fact that it isimpossible to open the lock except in the manner described. This is considered a marked advantage, as the bolt cannot be forced inwardly by a tool thrust under it.

.Having thus described my invention, I

claim as new and desire to secure by Letters Patent- 1. A sash-lock having a slidable bolt, a link pivotally attached thereto, a second link having a fixed pivot-point and having a joint connection with said first, link, means for normally holding said joint connection displaced laterally with respect to the line joining the remote ends of said links,l a member constituting a stop to limit the movement of said joint whereby said bolt is locked against opening by a force acting directly thereupon, and means for moving said joint connection toward and beyond `said line to Withdraw said bolt.

2. In a sash-lock, in combination, a case, a bolt slidably mounted therein, a link pivotally attached to said bolt, a second link having a fixed pivot-point and having a joint connection with said first link, a spring normally holding said joint connection displaced laterally with respect to the line joining the remote ends of said links and against the side of said .case whereby said bolt is locked against opening by a force acting directly thereupon, and means for moving saidjoint connection toward and beyondsaid line to withdraw said bolt.

3. In a sash-lock, in combination, a case having a projection on the inner face thereof, a bolt slidably mounted in said case, a link pivotally attached to said bolt, a second link having a fixed pivot-point and having a joint connection with said iirst link, one of said links having a projectingpin near said joint connection, an arcuate spring engaging said projection and said pin and normally holding said joint connection displaced laterally with respect to the 'ine joining the remote ends of said links and against the side of said case whereby said bolt is locked against withdrawal by a force acting directly thereupon, and means for moving said joint connection toward and beyond said line to withdraw said bolt.

In testimony whereof I have signed my name to this specification in the presence oi two subscribing witnesses.

CHARLES S. WRAY.

Witnesses:

F. D. AMMEN, JNO. M. RITTER.

IOC 

